title: A question in evaluation of mixed beam (neutron/photon) therapy.
mesh_terms: D006258:Head and Neck Neoplasms / Q000532:radiotherapy*; D006801:Humans; D008207:Lymphatic Metastasis / Q000532:radiotherapy*; D009333:Neck; D009502:Neutrons; D011882:Radiotherapy, High-Energy / Q000379:methods*